Thread-measurer for sewing-machines.



No. 811,583. PATENTEI) FEB. 6, 1906.

G. PBDERSBN. THE-BAD MBASURER FORSBWING MACHINES.

APPLICATION FILED AUG.14, 1905.

4 SHEETS-SHEET 1 Wifimsms V 6h H lgncyenhov.

; m an a amen BYflQ/W WQ ATT'Y'S.

PATENTED EEB. 6, 1906.

' 0. PEDERSEN.

TEEEAD MEASURER FOR SEWING MACHINES.

APPLICATION FILED AUG. 14, 1905,

4 SHBETSSHEET 2.

PATENTED FEB. 6, 1906.

7 O. PEDERSEN. THREAD MEASURER FOR SEWING MACHINES. APPLIOATION FILEJIAUG. 14, 1905.

4 SHEETS-SHEET 3 I {I I l m 0 Lr Q2 No. 811,583. PATENTED FEB; 6, 1906,

G. PEDERSEN. THREAD MEASURER FOR SEWING MACHINES.

APPLIUATION FILED'AUG. 14, 1905.

4 SHEETSSHEET 4.

strut-lion imi hiresorted to without tiepnrtmg ironi the spirit or sni'rilit-ing; any of the ini- Uhi'ilfli Siil it liiifei ihil fiiiili ii Ulli FiU tiiiiiiH'llAN iEDl litSi iN. ()F Si. Liiiil 'ifi. liilr'it iifiijiil, ASSiGNOli TO LAN'I'HS MAC/MIN I (,lOiviiANY. OF hi'i. LUUIS, llitf-ib-itiiiiii, A. Ol-iiURXiTlUN ()l MiSSUURI.

THHEAD-IVIEAQUHEW FOFE @EWii it Q WiAGI-HN ES.

Specification of Letters Patent. Patented Feb. 6, 1906.

Application filed Au ust 14, 1905:. Serial l lo. 274:,118.

ion in the tiiltt'ilitiii intiirzit'eti h the arrows. Be it known that l, (hims'rn ii Plantations, tin the slini t 2 is :1 (11111 Ii, operating; at lever 4, H citizen oi the United St Lites, residing, at St. which is ttiiilttljittl to the needle-imr 5, which Louis. Missouri have invented it certain new intnrn is i-onnectetl toniink ti on it rock-sinii't'i, iiiiti usel'ni improvement in i ilitttthii'icttri eiii'ryin i; theneetiie.iisgnidgiinil th pi'esse1'- nrers i'or Honing-Mimitines, oi which tlie i'ol-- ioot, Wliitii }?i't+i- \StI-i tH)i is designated by the inning is it l'uil, ('lttii',-iili(i exntt t'iestription, iieieronewnnnierzil h. The presser-ioot S is such as will emihlo others skilled in the art to pi'oi'ii'ietl with n rmiwvni'iily-extending porwhirhit'. oppertziins to nnike ttiiti nsethe some, tion ti. t'onnerttii to it lover it), i'ulerinneti zit relereni-o iieiiig' had to the notionipn nying i1 and hosting tL terminal connection with :1v drawings, forming- [)tti'i of this specification, vortieeil ret-iprtirntorylinki2,pro\'itietiwith in whioh it pivotnf oonneoiion 13, whereby it is secured Figure] is it view in elevation of the timiriti to the siitiing mun H. in o siitiewziy i5. Jonrmeasuring inevimnisni for t]. sewinginnohine iizi-iQti in it in'nrltet 17 on the frame is it rot-i tiilti thenppnrtenonoeseooperaLingtliorewith. shitit 15%, having it threziti-reinoving urn] it). Fig. 2 is an enlarged enii devotional View ol' provitieii with :in eye 2t), through which the the threzuhniezisuring met'lninisni. Fig. 3 is i'in'eitii passes. The roolvsinii t lbs is proall! enlarged r-ievzitionzil View oi' the thread \ititXi with an. upstanding i-rnnk-iirni iii. in liikwoii'. Fig. 4. is a. detail perspeetivt- VltW the NM of which. is u roller J2, and to the sitiu oi" the threiitilot'i\ting p izites. i igsv 5 ttiiii ii of this tiit=ili-itl"lii is :tseeomi roller 12%. are siile eiei'ntionnl views of port oi'.-i.se\i'in; titsig ntitesn s 'iringset'nreti iiiiiitill :i riwi llliitiiilit niei'hnnisin, showing the thrrzui iT ziiiti hearing, against the ri'oniwo'ni .Ziflsu 3 measuring titVit't ttlitl the Iain-mp iii their as to t'iiiist the other 12:; Iii the shit oi the two extreme positions. ti'i liiil-?titit 21 to :it uii Linn-s raise against th This invention reintes to sewnig-inzieiiinwz. mint-love 3;") oiii1 -t-nrosiiiit i i, tin the euro itliti poiiit'niin'lyio ztilii'tittilllttirkiiiilitfiiit'iikiii i i i nrnni iiiii iit'iiiiii .li'i, oiiit'h is min'pt :inisni th rel'or whiehwill he otinpt'ed totziitv Hi to t iiiiili with iht roiiez' 3 tint-in the oil the requisite nnionnt oi' threzni tor the rm'uiniio-n oi' he i'lliii tiir-it 3?. (in theshni't' 2 stitch iri'espeotive oi' thetiilierenres in thivkis :in Zt'i'iHii'il 1Z7, 'o'hith operates u pitnmn ness of the nmterini introtlilreil between the 3H, t-oont-rieti to a: t-i'zinii-nrni 29 on :t roii;- worl -h1l lo itlitl. the p1'esserl'oot1. Another slnii't Iili. 'iiiis rorlvsimit hurries n t'iilii lit. ohjeetoi the invention is to providt zi threniil \Yltitil is minptwi to osoiiinto, so :is to :ilter- S5 n'ieztsui'er \vhirh will at ztll times remove the nziteiy it't note the pivottti lt)t'liiii{*-i(\'ti'fi 3'. exact. amount of threzui required for making; anti :33 on the hint-hot 2H, support-oil at the the stitch. rent" of the nnirhine, Siiiti lovers 3; anti 31% he- .Another ohjet't ol" the invention is to proin resili ntly ('Ulititt'itti h :1 spring; CH. inivitie nieztns l'or lot-king the thrr-nti i)t'i\\'ttti nieiiiziteiy heion these levers 32 :intl 32% is on go the source oi' supply and the sonrt-e oi eoniliiiil'UXiliittiliY rigiti plate 35, which is prosuinptionnitereut'iiineusiu'einent': unit :1 ion i \itiiti with at tieprntiing projection 36, l':isthe! ohjet-t. is to ])Ii \'i(i( ineons lot tempo 3 itliiti to the linttilii1ti I'ttl1iC, the horizontal iitl'il nniot'iting; the iilt'titti shooiti Ut't'ilHiUi; i portion oi' Stlili piziie being; provided with (itiiittiiti. threzul-openin;rs 3'? and 3S. Upstiintiing 5 Other ohjet-ts onii :itivnntnges, its well as pins Iii) tlilti it) tti't provided on the plate 3%.) the novel tietoiis oi toltstlilttion oi this inttliti voiisiitiite guides lot the spring-plate 41. vention, \\'ili he Sitttiiittlii) tlest-rilieii iiereini whit-h is iiUYitliti with openings 42 itilti 43, ni'ter, it i)(ili;!: nntierstooti that t-ininges in rough \Vliitli snitl pins enter. The ends of form, proportion, tlliti minor iletuiis oi eon- LOO .ot plate -H; itlt sprung u )wii-rii slightly, as \viE he presently expln-ineti.

"ihe thi'omi 44 nnty he fed from any suit-- iii-1e source of supply as, for example, :1, spooi---initi iiy referen'ue to Fig. 3 it; will be noted that it is interposed between the plates 35 ktliti 4t, mssing through the opening 37,

'nniii 'es thereoi. i iieieiring now to the (iron: is in nuineri tier imne oi' the thread-laying disk 3. The

' tions with the .one of its arms connected to the shift-lever 61 thence around the take-off lever 19, thence I through the opening 38, thence down through the wax-pot 45, thence around the pulley 46 adjacent the wax-pot, thence over the pulley 47 above the wax-pot, thence around a pulley 48 on the take-up arm 49, and finally to the mechanism adjacent the worktable 50.

The take-up lever is actuated by a crank 51 on the rock-shaft 52, carrying said lever 49, the crank 51 being operated by an elbow-lever 53, havin a roller 54in-a-eam-55-on the ever 53 is fast on a rock-shaft 56; but as the, take-up mechanism forms the subject-matter ofa separate application filed me of even date herewith and given Serial do not deem it necessary to describe it detail in this application. It will be suilic'ient to say that the take-up lever is operated in time with the thread-measuring ,device, so that Whenthr'ead is being taken from the source of supply the take-up lever. wiil be in itsjelevatedfposiin, s illustr d in Fig. 5; but when the thread has been measured and the takeoff lever has moved to a position so that the thread may be utilized by the needlemechanism the take-up lever 49 will be depressed, as shown in Fig. 6.

I have described the lower plate of the thread-measuring mechanism as being substantially rigid. Normally this is true; but under certain conditions it may be sprungto release the thread. The plate 35 is normally held rigid by a pivoted stop 57, having an arm 58, connected to a link 59, which in turn .is'connected to a bell-crank lever 60, having by a link 62. The shift-lever 61 is the same jihift-lever'as is described in my companion a plication filed of even date herewith and u iliz ed for the presser-foot release mechanism. While the stop 57 will normally rest against the plate 35 to hold it rigid, it may be removed from en agement with said plate for the purpose of pu ling the thread through the. threztdmeasuring device when themachine is being threadedorforany' purpose when the machine is not actually sewing. In order to permit the plate 35 to yield, the lever 61 may 1. 'b'rnoved 1n the direction indicated by the arrow and through the medium of the connecarm 58 the stop 57 will be moved out of engagement with said plate 35, so that the thread will not bind between said plate 35am; thenplate 41.

In measuring the thread the sewing mechanism and presser-foot mechanism, as well as theshuttle and the other appurtenanhes, will be timed in their operations so that the requisite amount of thread will be taken oif'by the take-oif'lever 19 at the proper time. The manner of governing the amount of thread is as follows: The material, which is designated r by.thereference-numeral 63, will be placed 011 the work-table 50 and the engaging porl tion of the presser-foot 8 willbe raised a sufficient distance to accommodate the thickness of the work. This raising of the forward end of the presser-foot will impart a movement to the lever 10, and through this lever a vertical movement will be imparted to the link 12, connected to the cam-slide 14. The vertical movement of the cam-slide will determine the relative position of the crank-arm 22 with respect to the cam 26. For example, if a thick piece of Work is inserted between the presser-foot and the work-table the rear end of the presser-foot will be depressed to a greater extent than if a thin piece of work was inserted between the work-table and the presser-foot. The thick piece of work will depress the rear portion of the resser-foot, and thereby depress the forward end of the lever 10 and raise the link 12. This raisin of the link 12 will in turn raise the slide 14, so that the deep portion of the cam 25 will be adjacent to the roller 23. The spring 24 will force-the arm 21 toward the cam, so as to maintain the roller 23 in engagement with the cam-face 25 of the slide 14 at all times. It will therefore follow that the roller 21 will be in a position to receive a considerably-- greater throw from the cam projection 26 than it would be ifthe shallow portion of the cam was opposite the--roll er;2 3, (as it would be if a thin piece of work wasinserted between the presser-foot and the work-table.) .As the crank-arm 21 will receive a considerable throw from the cam projection 26, a considerable movement will beimparted to the take-oii lever 19. While the take-oii lever 19 is moving to take off the thread from the source of supply the cam 31 will be in the position indicated in Fig. 3 with the clamping-lever 33 bearing on the end of the plate 41 distant om the source of supply. As soon as the take-6ff lever has moved down its complete stroke and begins to recede the cam27 will actuate the 44 between nearest the source of 31 will be in the When the cam the plates 35 and 41 at the end supply, so that the cam position shown in Fig. 1, the ends of the plates distant from the source of supply nearest to the source of consumption will be opened, so that the take-up lever 49 may take up the thread which has been removed by the take-oil lever 19, and in the latter case it will be in Fig. 6, whereas when the thread is being removed by the take-off lever'from the source of supply the take-up lever 49 will be in the position shown in Fig. 5. Of course it is to win the be understood that the thread-laying mech-,

anism, the needle-operating mechanism, and the shuttle are all to be operated in their proper sequence, so as to insure the proper operation of the machine.

From the foregoing it will be clearly apparent that if a comparatively thick piece of cam 31, so as to lock the thread position shown in Fig. 1.

in the position indicated erases work will cause an upward movement of the slide 14 to cause a comparatively large throw of the lever 19 a relatively thin piece of work inserted between the presser-loot and the work-table will cause the slide 14 to be depressed and move the crank'arm 21 farther away from the cam projection 26, so that a comparatively slight throw of the take-off lever 19 willresult and a smaller amount of thread will be measured for the work, as is re quired. The presser;-fo0t 8 will be automatically caused to engage the work b the vertieal b ar 64, which is connected to t 1e portion 19 thereof, said bar 64 being the same bar as is described in my'companion application of even date herewith and given Serial No. 274,117 for presserdeet mechanism.

1. In a sewing-1nachine, an element for measuring thread, a clamping means on the respective sides of the thread-measuring element said clamping means oomprisinga normally rigid base-plate, means for alternately clamping the thread against the respective end portions of said base-plate and means for temporarily destroying the rigidity of said base-plate, substantially as described.

2. In a sewing-machine, a threadaneasuring element, means for alternately clamping the thread before and after each operation of the thread-measuring element said means comprising a rigid base-plate and a springplate above the same Whose ends bind the thread first against one end portion of the base-plate and then against the other end of said baseplate, substantially as described.

3. In a sewing-maehine, a thread-measuring element and a thread-clamping means comprising a base-plate having an inherent ielding tendency, means for normally ho ld mg the base-plate rigid means for alternately clamping the thread to the base plate near the respective ends thereof and means for temporarily destroying the rigidity of said baseplate, substantially as described.

4. In a sewing-machine, a thread-measur ing element, and a thread-clamping means cooperating therewith comprising a baseplate, a spring-plate above the same, rocking elements for blnding the respective ends of said spring-plate against the-base-plate and a rocking cam for alternately actuating said rocking elements, substantially as described.

5. In a sewing-machine, a thread-measuring element, and a thread-clamping means cooperating therewith comprising a baseplate, a spring-plate above the same, rocking elements for blnding the respective ends of said spring-plate against the base-plate and means for alternately actuating said rocking element substantially as described.

6. In a sewing-machine, a thread-measurtit ing element comprising an arm, a rock-shaft carrying said arm, n roclearm on said rockshaft, a slide having a cam-face for engagement with said rock-arm, an actuating-cam for engagement with saidrock arm and means for moving the slide so as to vary the operative engagement. of the actuating-cam with the roclearm, substantially as described. 7. In a scwing-machine, a threaduneasuring element a rocker shaft carrying said thread-measuring element, an arm carried by said rocker-shaft, a slide having engagement with said arm, an actuating-cam for rocking the shaft and having intermittent engagement with said arm, a presser-foot mechanism, and means connected to the slide and t0 the resser-foot mechanism whereby the engagement of the slide with the arm on the rock-shaft will be governed by the position 01'' the prcsser-foot above the work-table, substantially as described.

8. In a sewinganachine, the combination of a rocking thread measuring element, a clamping baseplate above said thread-measuring element, a spring-plate above the baseplate, rocking elements adapted to alternately bind the respective ends of the spring-plate against the base-plate and a cam-actuated cam for alternately operating the rocking elements, substantially as described.

9. In a sewing-n1achinc, the combination of a rocking threadn1easuring element, a

springplate, a base-plate, rocking elements abovethe spring-plate adapted to alternately bind the respective end portions of the springplate against the base-plate, a spring connecting said rocking elements and a rocking cam having alternate engagement with said rocking elements, substantially as described.

10. In a sewing-1nachine, the combination with a presserdoot, a lever connected to said presser-l'oot, a slide having a cam-face, a connection between the lever and slide, a rockshaft, an arm connected to said rock-shaft and bearing against the cam-face, an actuating-cam for said rock-ar1n, a thread-measur- 1 ing element carried by said rock-arm, said elements being arranged so that the position of the presser-t'oot with res ect to the work will govern the position of t 1e cam-face with res ect to the rocker-arm and thereby contro the operative engagement of the aetuating-cam with respect to the rocker-arm, substantially as described.

In testimony whereof I hereunto al'lix my signature, in the presence of two witnesses,-

this 11th day of August, 1905.

CHRISTIAN PEDERSEN.

Witnesses:

B. F. FUNK, GEoReE BAKEWELL. 

